Search for solar atmospheric neutrinos with the ANTARES neutrino telescope

Solar Atmospheric Neutrinos (SAνs) are produced by the interaction of cosmic rays with the solar
medium. The detection of SAνs would provide useful information on the composition of primary
cosmic rays as well as the solar density. These neutrinos represent an irreducible source of background
for indirect searches for dark matter towards the Sun and the measurement of their flux would allow for
a better assessment of the uncertainties related to these searches. In this contribution we report on the
analysis performed, based on an unbinned likelihood maximisation, to search for SAνs with the
ANTARES neutrino telescope. After analysing the data collected over 11 years, no evidence for a solar
atmospheric neutrino signal has been found. An upper limit at 90% confidence level on the flux of solar
atmospheric neutrinos has been obtained, equal to 7×10 −11 [ TeV −1 cm −2 s −1 ] at Eν = 1 TeV for
the reference cosmic ray model assumed.